Home / 739,458.78-1,020,453.09-399,927

Finding the Fourth Proportional to 739,458.78, 1,020,453.09 and 399,927

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Solution

The fourth proportional to 739,458.78, 1,020,453.09 and 399,927 is: 551,899.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,458.78 : 1,020,453.09 = 399,927 : x
  2. Step 2: Convert to fraction form
    739,458.78/1,020,453.09 = 399,927/x
  3. Step 3: Cross multiply
    739,458.78x = 1,020,453.09 × 399,927
  4. Step 4: Simplify right side
    739,458.78x = 408,106,742,924.43
  5. Step 5: Solve for x
    x = 408,106,742,924.43/739,458.78
  6. Step 6: Final answer
    x = 551,899.25

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.